These were indeed the arguments against af Yoim when R Shapiro proposed it – that now any ignoramus can say that they finished Shas.
First, you don’t have to say that you finished Shas. It is up to you. Second, I view this a modern variation of R Salanter answering someone who said he has just one hour a day – should he do Gemorah or Mussar. He said – mussar, and then you’ll find out you can find more time for Gemorah.
A simple way to expand is to mark up an interesting sugya during the class, and then expand on that topic separately.